Pennsylvania Gov. Josh Shapiro is quietly trying to derail a left-wing congressional candidate championed by New York Rep. Alexandria Ocasio-Cortez, Axios has learned. Why it matters: The May 19 primary is shaping up as an early test of strength for the two potential 2028 presidential campaign rivals. The contest is also a microcosm of the nationwide civil war between the Democratic Party's liberal and centrist wings. Driving the news: Ocasio-Cortez has endorsed Chris Rabb, a progressive fire